Abus Ultra 410 U-Lock

The Abus Ultra 410 is a compact lock with a 140 mm x 150 mm internal clearance. It is designed primarily for securing the frame to a rack, but you may struggle to capture both the frame and the wheel simultaneously depending on the rack style.

The SH34 bracket is designed to mount to round frame tubes with a diameter between 24 and 35 mm. If your bike has an unusually shaped or oversized frame, you may need to carry the lock in a bag instead.

The lock is fully weather-resistant, meaning the internal mechanism is protected against rust and freezing. It is a reliable choice for year-round commuting in most climates.

Sold Secure Silver indicates that the lock has been independently tested and proven to withstand a determined attack for a specific amount of time. It is generally recommended for moderate-risk areas, such as short stops in public spaces or secure bike storage rooms.

No, the lock is specifically engineered with a refined design to minimize movement and noise. When properly secured in the included SH34 bracket, it remains quiet even on bumpy city streets.